president obama will be the first of the six, raul castro is the last to pay his respects, but they are sharing a stage. i think it is interesting that you have, obviously the u.s. and cuba, which were enemies during the cold war, certainly not the friendliest of nations, but nelson mandela who in life was so unifying in south africa, an inspiration to others, even in his death he's unifying some unlikely characters. >> brianna, thank you. brianna is over at the white house. we'll watch this memorial service, of course, unfold. cnn will have live coverage of the memorial service. it begins 4:00 a.m. eastern. >>> still ahead, an american veteran is bam home after more than a month as a captive in north korea. we have new information about the way he was treated. we're learning more about kimdown u.n.'s unpredictable regi regime. >>> he thought he was out of options until doctors tried something new. they killed his cancer in much the say way that our bodies fight the common cold. >> now they can't even find it. how does that feel? >> really great. my customers can shop around-- see who d